Home / 211,022.97-291,231.50-126,138.21

Finding the Fourth Proportional to 211,022.97, 291,231.50 and 126,138.21

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Solution

The fourth proportional to 211,022.97, 291,231.50 and 126,138.21 is: 174,082.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,022.97 : 291,231.50 = 126,138.21 : x
  2. Step 2: Convert to fraction form
    211,022.97/291,231.50 = 126,138.21/x
  3. Step 3: Cross multiply
    211,022.97x = 291,231.50 × 126,138.21
  4. Step 4: Simplify right side
    211,022.97x = 36,735,419,474.92
  5. Step 5: Solve for x
    x = 36,735,419,474.92/211,022.97
  6. Step 6: Final answer
    x = 174,082.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.